查询词典 surface area

With the improvement of Si/Al ratio, total BET surface area decreased and mesopore volume increased, which favored the diffusion of feed/isomerized products, avoided too much secondary reaction and improved the selectivity of isomers.

磷钨酸可以使得分子筛的孔道阻塞，使其内部的酸中心和金属中心无法得到体现，因此，催化剂的金属功能受到限制，烷烃的氢解反应减少，产物中的甲烷和庚烷量下降。

Their specific surface area and porosity parameters were calculated from the nitrogen adsorption-desorption isotherms at 77 K.

所得的炭样品用氮吸附法表征，并根据77K时的吸附－脱附等温线计算了它们的比表面和孔结构参数。

It was found that tignite and its char have their NO re d uction efficiency higher than those of other coals and chars.The content of vola tile in coals,surface area of the chars and the content of metal catalyst in ash are all important factors affecting the NO reduction efficiency.

实验结果表明，褐煤及褐煤焦对NO的还原能力明显强于烟煤和烟煤焦，煤粉挥发分含量、煤焦颗粒的比表面积和煤灰中的金属氧化物含量都对NO还原有重要的影响。

Or do you use it as a surface area on which you can display interesting vignettes?

或者你把它当作是表面上你可以展示区趣味瑰丽？

The dissolution rate of platinum sheaths and thimbles is known to be proportional to the exposed metal surface area; and the leakage current through the metal to tank ground, and inverselyproportional to the frequency of the power mains.

铂金套管和嵌套管的分解率有一个常用的比例适合裸露的金属表面区域；泄露电流穿过金属到储槽容器，相反地有一个电源有频率有一个合适的比例。

The fusion kinetics and steady length of rods formed by smaller versus larger spheroids (approximately 100 vs. 300 microm diameter) were indistinguishable, even though smaller spheroids had twice the surface area and greater numbers of contacts between units.

由较小的和较大的球体（约100和300微米直径）形成的融合动力学和稳定的柱状长度没什么区别，虽然较小的球体有两倍的表面积，单位间有更多的接触。

It is only the sorbed water in this first 10 mm that is exchangeable to buffer the daily variation in RH. Further progress in exhibition space climate buffering must wait on the development of absorbent walls with a high exposed surface area.

关于更进一步的研究，博物馆展出空间的气候缓冲控制应当等待有了合适的具有高度吸附表面的吸附墙体材料后，才能考虑应用于博物馆。

Hyperbranched polymer used as polymer electrolyte material has its unique virtues, such as large surface area, lack of crystallinity, low glass transition temperature, high solvating capability to salt ions.

超支化聚合物作为聚合物固体电解质体系的基体材料具有独特的优点：有较高的表面积；没有结晶性；具有较低的玻璃化转变温度；对离子具有较高的溶解能力。

The effects of carbonization temperature and time on shrinkages of PAN-CHF and PAN-ACHF,activation yield, specific surface area and adsorption capacity were investigated.

考察了炭化温度和炭化时间对PAN-CHF的收缩率、PAN-ACHF的收缩率、活化收率、比表面积和吸附性能的影响。

Owing to their high specific surface area, membrane absorbers provide higher volumetric mass transfer rates than convention scrubbers.

随着工业的发展和膜技术水平的提高，将膜吸收技术应用于酸性气体的脱除或分离成为一种有效而节能的分离方法。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。